package cn.tedu.v3_1;

import java.io.*;
import java.net.*;
import java.util.*;

/**
 * Client 客户端-改成Server 端模式【优化】
 */

public class Client {
    private Socket socket;
    private static final String HOST="172.20.10.10";
    private static final Integer PORT=2545;
    private BufferedReader br;
    private PrintWriter pw;

    public Client() {
        try {
            socket=new Socket(HOST,PORT);
            br=new BufferedReader(new InputStreamReader(socket.getInputStream(), "UTF8"));
            pw=new PrintWriter(new BufferedWriter(new OutputStreamWriter(socket.getOutputStream(), "UTF8")), true);
        } catch (NullPointerException e){
            System.out.println("IP传入错误导致链接失败");
        } catch (UnknownHostException e){
            System.out.println("IP传入出错");
        } catch (ConnectException e){
            System.out.println("客户端链接失败：建议检查IP或者端口号");
        } catch (IOException e) {
            System.out.println("客户端链接服务器失败，提示：检查IP/端口");
        }
    }

    public void start(){
        try {
               new Thread(() -> {
                 try {
                     String message;
                     while ((message = br.readLine()) != null) {
                         System.out.println("服务器说：" + message);
                         System.out.println("客户端请输入");
                     }
                     } catch (IOException e) {
                         System.out.println("服务器端读入失败");
                     }
                 }).start();
                 Scanner input = new Scanner(System.in);
                 while (true) {
                     System.out.println("客户端请输入");
                     String line=input.nextLine();
                     pw.println("客户端说:"+line);
                 }
         } finally {
            if (br != null)
                try {
                    br.close();
                } catch (IOException e) {
                    System.out.println("客户端关闭失败");
                }
            if (pw != null)
                pw.close();
        }
    }
    public static void main(String[] args) throws IOException {
        new Client().start();
    }
}

